My mother took lithium for about 5 years. After having 4 children she was prone to mood swings. She was on a relatively low dose.
Her thyroid is shot and her kidney’s don’t work so well, both known side effects. Her levels were constantly tested, but even with that every so often her lithium level rose to toxic levels and it was like she was going into diabetic shock or coma. There is not much difference between the toxic/ therapeutic levels of lithium.
There are different forms of lithium salts. Two are sold over-the-counter as mineral supplements. Lithium orotate and lithium aspartate. The types used in psychiatry are lithium carbonate and lithium citrate. As for putting it in water supplies; if that happens then it’s long past time to shoot the bass turds.
“There is not much difference between the toxic/ therapeutic levels of lithium.”
That bears repeating.